Joseph t



No Model) J. T. BEDPORD.

PROCESS OF WAXING PAPER.

NO. 273,013. Patented'PehZ'], 1883.

W/T/VESSES.

ATENT JOSEPH T. BEDFORD,

OF NEW YORK, N. Y.

PROCESS OF WAXING PAPER.

SPECIFICATION forming part of Letters Patent No. 273,013, dated February 27, 1883.

Application filed June 20, 1882.

To all whom it may concern:

Be it known that I, JOSEPH T. BEDFORD, of the city,'county, and State of New York, have invented certain new and usefullmprovements in the Process of Waxing Paper, of which the following is a description in such full, clear, concise, and exact terms as to enable any one skilled in the arts to which my invention l elongs, or with which it is most nearly connected, to make and use the same, reference being had to the accompanying drawing, making part of this specification, and to the letters and figures of reference marked thereon.

This invention does not embrace anything novel in machinery, but consists of a novel method of treating the paper, in combination with the operation of waxing it with parafline or other similar material.

The drawing is all combined in one figure, and shows the machinery by which the invention is accomplished.

In waxing paper it is desirable to use as little wax as possible to accomplish the desired result, and at the same time to get it evenly distributed and thoroughlyimpregnated in the paper, and yet leave as much as possible on the surfacein the form ofa hard, uniform gloss. To accomplish this result it is necessary to raise and maintain the wax and waxing-rollers and machinery to as high a temperature as possible, having due regard to the nature of the material and object sought to be accomplished, and then to suddenly cool the waxed paper to as low a temperature as possible the instant it leaves the heating machinery.

The drawing illustrates a printing and also a cutting attachment; but these attachments do not make any part of the subject-matter of this specification, but may form the subject of a separate patent. They are illustrated and described here merely to show their relation to the invention proper.

Reference being bad to the drawing, A is a roll of paper; B, an idle-roller; cc, guide-rollers; l), type-cylinder; E, pressure-cylinder; Rink-reservoir; Glhinkingrollers; ,guiderollers; K, heating-rollers; J J, waxing-rollers, also heated; A A, reservoirs for coating with wax, also heated; d d, brushes for spreading the wax on the paper; V. closed chamber for containing the waxing and heating devices; LL, coils of steam-pipe; N, cooling-chamber;

(No model.)

M, pipes through which a blast of cold air is forced into thecooling-chamber upon both sides of the paper; 0, a roller to carry the paper through the cooling-chamber; P,guide-rollers; Q, a roller in which a series of creases are cut, into which the rotating knives R work to cut the paperlongitudinally; S, a roller over which the paper passes, and upon which it is cut transversely by a knife, 0, working in the slits a of the roller. T and U are receiving-tables upon which the paper is laid as it is out upon the roller S.

The course of the paper through the print-- ing-machine, the waxing-machine, the coolingchamber, and the cutting and receiving machine is indicated by the dotted line.

There are none of the parts that, considered by themselves, possess any novelty. The invention is in the combination and treatment of the paper. The wax is spread upon the paper by the same means and in the same manner substantially as in my patent dated February 28, 1882. The point of the invention is the heating of the paper and wax during the operation of waxing to its maximum in the practice of the art and maintaining its temperature until it leaves the heating media, and of then suddenly reducing its temperature by bringing it in contact with an atmosphere of low temperature. This is done by inclosing the heating and waxing apparatus within a closed chamber, V, and by combining with it a coolingchamber, N, through which a blast of cold air is continually passing. The blast of air is ob tained by means of a blower or an aircompressor connected to the pipes M. The most elfectual way of obtaining the desired degree of cold is by the use of an aircompressor arranged to deliver directly into the coolingchamber through the pipes. By raising the temperature of the paraifine as high as possible without vaporizingit, and then suddenly cooling it artificially, the paper can he run rapidly through the waxing apparatus, where only a small amount of wax will be taken up coinparatively, and a hard, uniform surface will be left upon the paper, the improvement thus saving time and material and producing a superior article.

I am aware that in waxing paperit has been proposed to pass the paper over hot rollers in the open EttlHOSPllrI'B and afterward under a blower; but in that plan only one side of the paper is affected by the blower, there is no way of confining the cold air upon the paper, the reduction of temperature is not sufficient, and the cooling is not sudden enough. The point is to suddenly cool the waxed paper by passing it from a hot chamber into and through a cold one, as above described and illustrated.

What I claim therefore, is-- The method, substantially herein described, of treating paper in the process of waxing it,

which method consists of first passingthe paper over heating and waxing rollers confined in a heated chamber, and of then suddenly cooling it by passing it directly from theheated chamber into achamber of low temperature, substantially as described, for the purpose specified.

JOSEPH T. BEDFORD.

Witnesses:

Amos BROADNAX, J. EDGAR BUL 

